Fig. 9: Measuring IgG cross-reactivity to heterologous Burkholderia species.

Serial dilutions of immunization serum were probed for IgG capable of binding to Bm strain CLH001, B. multivorans strain ATCC 17616, or B. cenocepacia strain K56-2 via ELISAs coated in the indicated bacteria. The Bpm strain Bp82 ELISA results from Fig. 4d are included for side-by-side comparison. Endpoint titers were calculated as the highest dilution at which measured absorbance was higher than the average absorbance of the equivalently diluted naïve animal serum ± 3 standard deviations. Endpoint titers were compared via Kruskal–Wallis with Dunn’s multiple comparison test. (*) p < 0.05, (**) p < 0.01, (***) p < 0.001. Made in GraphPad Prism.